To convince people to contact their representatives in Parliament asking for a strong climate change law we developed The Big Ask March: a virtual protest march. On the site users can upload videos, find and email their MPs. Sharing views whilst being part of the biggest collective effort for climate change in the UK so far. Also in the site is an ever-changing film featuring videos submitted by users. It is regularly updated online and in cinemas. Since the launch more than 172,000 people have contacted their MPs and 64% of Parliament members signed the petition for a strong law.